"The whole of science is nothing more than a refinement of everyday thinking." ——Einstein

"In science, the important thing is to modify and change one’s ideas as science advances."——Herbert Spencer (1820–1903)

"The good life is one inspired by love and guided by knowledge." ——Betrand Russell

"The difficulty lies, not in the new ideas, but in escaping the old ones, which ramify, for those brought up as most of us have been, into every corner of our minds.." ——John Maynard Keynes (1883 - 1946)